Lopi Radiant Plus Gas Insert for Home Comfort

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Experience Lasting Warmth with the Lopi Radiant Plus Gas Insert

The Lopi Radiant Plus Gas Insert provides comforting radiant heat plus natural convection, delivering warmth you can feel through your living space. Available in Medium and Large Inserts, this insert is designed to fit metal and masonry fireplaces and—unlike some inserts—still works reliably even during power outages. With standing pilot (Millivolt) or GreenSmart Basic control options and multiple face styles, the Radiant Plus offers both versatility and performance.

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Efficient Heating with the Radiant Plus Medium and Large Inserts

The Radiant Plus Medium ($3,999) is ideal for heating family rooms, bedrooms, or mid-sized areas (up to ~1,250 sq ft), while the Radiant Plus Large ($4,199) is built for bigger open living zones, gathering places, or spaces up to ~1,650 sq ft. It delivers a generous fire viewing area with ceramic glass, letting you enjoy real flame visuals with the Dancing-Fyre™ burner and Classic Log Set. Whether you choose Natural Gas or Propane, you get strong heat output, excellent steady-state efficiency, and the choice of a pilot system that either stays lit (Millivolt) or activates only when needed (GreenSmart Basic) for improved fuel economy.

Built strong, these inserts use heavy gauge steel, a robust burner system, and reliable venting (direct vent) with 3″ intake & 3″ exhaust. The Radiant Plus also offers design flexibility: different faces/trims (Times Square™, Designer™, Universal™), optional surround panels, and control options including remote thermostat control or basic manual operation. You’ll also find a convection fan option (100 CFM) if you want more airflow, though radiant heat remains the core benefit.

Features and Options

  • Fuel Types: Natural Gas (NG) or Propane (LP)
  • Control Modes: Millivolt Standing Pilot or GreenSmart Basic (IPI)
  • Heating Styles: Radiant heat + natural convection around the firebox
  • Fire Viewing: Ceramic glass fireview, Dancing-Fyreâ„¢ burner, Classic Log Set
  • Viewing Area Sizes: Medium and Large Inserts
  • Face & Trim Options: Times Squareâ„¢, Designerâ„¢, Universalâ„¢ faces; Surround panel options
  • Venting: Direct Vent (3″ Intake, 3″ Exhaust)
  • Fan: Optional 100 CFM convection fan
  • Power Outage Operation: Models continue to work without electricity (standing pilot or battery backup)
  • Efficiency: High steady-state efficiencies for both NG & LP in both sizes

Design Customization: Ability to custom fit panels, select face styles, and match your fireplace opening and style.

 

Specifications

Specification Medium Insert Large Insert
Heating Capacity Up to 1,250 sq. ft. Up to 1,650 sq. ft.
Maximum Input (High) 25,000 BTU/hr (NG or LP) 33,000 BTU/hr (NG), 31,000 BTU/hr (LP)
Minimum Input (Low) 12,000 BTU/hr (NG), 13,000 (LP) 17,000 BTU/hr (NG), 15,500 (LP)
Steady-State Efficiency (High) Up to 86.98% (NG), 89.03% (LP) Up to 87.81% (NG), 87.94% (LP)
Canadian Efficiency P4 74–76% depending on fuel type 79–81% depending on fuel type
Glass Viewing Area 24-1/4″ W × 12-3/4″ H; 308.5 sq. in. 27-3/4″ W × 16-1/4″ H; 451.7 sq. in.
Dimensions (Height × Width Front × Depth) 19-1/2″ H × 26-1/2″ W (Front) × 14-7/8″ D 23-1/2″ H × 30-1/4″ W (Front) × 14-7/8″ D

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